* If `--debug` is set, we will output all server communication to
stderr. That way, we can compare our requests to what is expected by
ush based on official docs.
* `discovery` now doesn't use the API key anymore - this is specified
using a custom override.
Nice, we are totally ready to test and fix all API features.
Related to #70
* keywords are no longer than 20 characters, which is a restriction
cargo imposes
* don't use 'homepage' link in cargo.toml unless the homepage is
non-empty
* Added all publish-results to mark the respective crate version
Related to #46
